4(29(29(29.....nzajbajbajb=+++(29expexp()nnnzAjAjnφφ==����(292exp2expnnnkzAjj kAjjnnφπφπ��=+=+����The polar form is more useful in some cases. For instance, whenraising a complex number to a power, the Cartesian formis cumbersome, and impractical for non-integer exponents. Inpolar form, instead, the result is immediateIn the case of roots, one should remember to consider φ+ 2kπasargument of the exponential, with k = integer, otherwise possibleroots are skipped:The results corresponding to angles up to 2πare solutions of theroot operation.